公开(公告)号：US20180004124A1

公开(公告)日：2018-01-04

申请号：US15638055

申请日：2017-06-29

Applicant: CANON KABUSHIKI KAISHA

Inventor： Kenta Shibukawa ,  Masahito Kato ,  Atsushi Toda ,  Taku Watanabe

IPC: G03G15/08

CPC classification number: G03G15/0889 ,  G03G15/086 ,  G03G15/0865 ,  G03G2215/0805

Abstract: An image forming apparatus includes an agitating member, a first electrode, a second electrode disposed with a gap from the first electrode such that the gap has a smallest portion located below a rotation center of the agitating member and a remote portion wider than the smallest portion and located above the smallest portion, and a frame body having a first wall surface having the first electrode disposed thereon and a second wall surface having the second electrode disposed thereon, and a developer detecting unit configured to detect an amount of developer from an output value output in accordance with a capacitance formed between the first electrode and the second electrode. The image forming apparatus performs correction and detects the amount of developer.

公开(公告)号：US09857730B2

公开(公告)日：2018-01-02

申请号：US15007265

申请日：2016-01-27

Applicant: CANON KABUSHIKI KAISHA

Inventor： Masahito Kato ,  Kenta Shibukawa ,  Kazumi Yamauchi ,  Katsuichi Abe ,  Naoya Asanuma ,  Atsushi Toda ,  Yosuke Kishi ,  Naoki Fukushima

IPC: G03G15/08

CPC classification number: G03G15/0889 ,  G03G15/0856 ,  G03G15/086 ,  G03G2215/085 ,  G03G2215/0888

Abstract: A developer container includes: a housing chamber 147 which includes an opening 145 and which houses developer; a stirring member 160 which includes a sheet-like stirring portion 160b and a rotary shaft 160a to which the stirring portion 160b is attached; and a first electrode 143 and a second electrode 144 which are used to detect an amount of the developer and which are arranged with an interval therebetween, where in an area X1 between the first electrode 143 and the second electrode 144 in the housing chamber 147 is positioned below the rotary shaft 160a of the stirring member 160, and the sheet-like stirring portion 160b comes into contact with the area X1 due to rotation of the stirring member 160.

公开(公告)号：US20180081300A1

公开(公告)日：2018-03-22

申请号：US15824098

申请日：2017-11-28

Applicant: CANON KABUSHIKI KAISHA

Inventor： Masahito Kato ,  Kenta Shibukawa ,  Kazumi Yamauchi ,  Katsuichi Abe ,  Naoya Asanuma ,  Atsushi Toda ,  Yosuke Kishi ,  Naoki Fukushima

IPC: G03G15/08

CPC classification number: G03G15/0889 ,  G03G15/0856 ,  G03G15/086 ,  G03G2215/085 ,  G03G2215/0888

Abstract: A developer container includes: a housing chamber 147 which includes an opening 145 and which houses developer; a stirring member 160 which includes a sheet-like stirring portion 160b and a rotary shaft 160a to which the stirring portion 160b is attached; and a first electrode 143 and a second electrode 144 which are used to detect an amount of the developer and which are arranged with an interval therebetween, wherein an area X1 between the first electrode 143 and the second electrode 144 in the housing chamber 147 is positioned below the rotary shaft 160a of the stirring member 160, and the sheet-like stirring portion 160b comes into contact with the area X1 due to rotation of the stirring member 160.

公开(公告)号：US09727000B2

公开(公告)日：2017-08-08

申请号：US15059474

申请日：2016-03-03

Applicant: CANON KABUSHIKI KAISHA

Inventor： Masahito Kato ,  Kenta Shibukawa ,  Yusuke Jota ,  Atsushi Toda

IPC: G03G15/02 ,  G03G15/00

CPC classification number: G03G15/0266 ,  G03G15/5037

Abstract: An image forming apparatus includes a potential detection portion that determines a surface potential of an image bearing member on the basis of an applied voltage value of a detection voltage applied to a voltage application member by a voltage application portion and a detected current value detected by a current detection portion in response to the applied voltage, and a control unit that sets an image formation condition for performing image formation in order to form a toner image on the image bearing member on the basis of the surface potential determined by the potential detection portion. When the surface potential is determined by the potential detection portion, the voltage application portion applies the detection voltage after applying, to the voltage application member, a voltage having an opposite polarity to an image formation voltage that is applied to the voltage application member during image formation.

公开(公告)号：US10228635B2

公开(公告)日：2019-03-12

申请号：US15824098

申请日：2017-11-28

Applicant: CANON KABUSHIKI KAISHA

Inventor： Masahito Kato ,  Kenta Shibukawa ,  Kazumi Yamauchi ,  Katsuichi Abe ,  Naoya Asanuma ,  Atsushi Toda ,  Yosuke Kishi ,  Naoki Fukushima

IPC: G03G15/08

Abstract: A developer container includes: a housing chamber 147 which includes an opening 145 and which houses developer; a stirring member 160 which includes a sheet-like stirring portion 160b and a rotary shaft 160a to which the stirring portion 160b is attached; and a first electrode 143 and a second electrode 144 which are used to detect an amount of the developer and which are arranged with an interval therebetween, wherein an area X1 between the first electrode 143 and the second electrode 144 in the housing chamber 147 is positioned below the rotary shaft 160a of the stirring member 160, and the sheet-like stirring portion 160b comes into contact with the area X1 due to rotation of the stirring member 160.

公开(公告)号：US09535355B2

公开(公告)日：2017-01-03

申请号：US15058417

申请日：2016-03-02

Applicant: CANON KABUSHIKI KAISHA

Inventor： Yusuke Jota ,  Atsushi Toda ,  Masahito Kato ,  Kenta Shibukawa

IPC: G03G15/02

CPC classification number: G03G15/0266 ,  G03G15/5037

Abstract: Voltages are applied to an image bearing member using at least three application voltage values which are larger than a discharge start voltage value and which have different magnitudes, at least one of the application voltage values having a value at which a direction of a current corresponding to the one of the application voltage values is reverse to those of currents corresponding to the other application voltage values. A relation between the application voltage value and the detection current value in a discharge area is calculated based on at least three application voltage values Vd1, Vd2, Vd3 and at least three detection current values Id1, Id2, Id3 detected by a current detection portion in relation to at least three application voltage values Vd1, Vd2, Vd3 and a voltage value V0 at which the detection current value is zero is calculated based on the relation in the discharge area.

Abstract translation: 使用至少三个施加电压值将电压施加到图像承载部件，所述至少三个施加电压值大于放电开始电压值，并且具有不同的幅度，至少一个施加电压值具有与其相对应的电流的方向的值 施加电压值中的一个与对应于其它施加电压值的电流相反。 基于至少三个施加电压值Vd1，Vd2，Vd3和由电流检测部分检测到的至少三个检测电流值Id1，Id2，Id3来计算放电区域中的施加电压值和检测电流值之间的关系 基于放电区域的关系，计算与至少三个施加电压值Vd1，Vd2，Vd3以及检测电流值为零的电压值V0的关系。

公开(公告)号：US10444671B2

公开(公告)日：2019-10-15

申请号：US15638055

申请日：2017-06-29

Applicant: CANON KABUSHIKI KAISHA

Inventor： Kenta Shibukawa ,  Masahito Kato ,  Atsushi Toda ,  Taku Watanabe

IPC: G03G15/08

Abstract: An image forming apparatus includes an agitating member, a first electrode, a second electrode disposed with a gap from the first electrode such that the gap has a smallest portion located below a rotation center of the agitating member and a remote portion wider than the smallest portion and located above the smallest portion, and a frame body having a first wall surface having the first electrode disposed thereon and a second wall surface having the second electrode disposed thereon, and a developer detecting unit configured to detect an amount of developer from an output value output in accordance with a capacitance formed between the first electrode and the second electrode. The image forming apparatus performs correction and detects the amount of developer.

公开(公告)号：US20160259263A1

公开(公告)日：2016-09-08

申请号：US15059474

申请日：2016-03-03

Applicant: CANON KABUSHIKI KAISHA

Inventor： Masahito Kato ,  Kenta Shibukawa ,  Yusuke Jota ,  Atsushi Toda

IPC: G03G15/00

CPC classification number: G03G15/0266 ,  G03G15/5037

Abstract: An image forming apparatus includes a potential detection portion that determines a surface potential of an image bearing member on the basis of an applied voltage value of a detection voltage applied to a voltage application member by a voltage application portion and a detected current value detected by a current detection portion in response to the applied voltage, and a control unit that sets an image formation condition for performing image formation in order to form a toner image on the image bearing member on the basis of the surface potential determined by the potential detection portion. When the surface potential is determined by the potential detection portion, the voltage application portion applies the detection voltage after applying, to the voltage application member, a voltage having an opposite polarity to an image formation voltage that is applied to the voltage application member during image formation.

Abstract translation: 图像形成装置包括：电位检测部，其根据施加在电压施加部上的检测电压的施加电压值和由电压施加部检测到的检测电流值，决定图像承载部件的表面电位; 电流检测部分，以及控制单元，其设置用于执行图像形成的图像形成条件，以便基于由电位检测部分确定的表面电位在图像承载部件上形成调色剂图像。 当表面电位由电位检测部分确定时，电压施加部分在施加到电压施加部件上的电压施加与图像中施加到电压施加部件的图像形成电压具有相反极性的电压 形成。

公开(公告)号：US20140348518A1

公开(公告)日：2014-11-27

申请号：US14283325

申请日：2014-05-21

Applicant: CANON KABUSHIKI KAISHA

Inventor： Koichiro Masui ,  Masataka Mochizuki ,  Kenta Shibukawa

IPC: G03G15/00 ,  G03G15/08

CPC classification number: G03G15/0881 ,  G03G15/0863 ,  G03G15/0882

Abstract: A cartridge includes: a developer accommodating chamber, provided with an opening, for accommodating a developer; a sealing member, provided with an electroconductive portion, for sealing the opening; and a storing element, provided with an electrical contact at a surface thereof, for storing information on the cartridge. The electroconductive portion covers the electrical contact.

Abstract translation: 墨盒包括：显影剂容纳室，设置有用于容纳显影剂的开口; 密封构件，设置有用于密封开口的导电部分; 以及存储元件，在其表面上设置有电接触件，用于存储盒上的信息。 导电部分覆盖电接点。

公开(公告)号：US20160259261A1

公开(公告)日：2016-09-08

申请号：US15058417

申请日：2016-03-02

Applicant: CANON KABUSHIKI KAISHA

Inventor： Yusuke Jota ,  Atsushi Toda ,  Masahito Kato ,  Kenta Shibukawa

IPC: G03G15/00

CPC classification number: G03G15/0266 ,  G03G15/5037

Abstract: Voltages are applied to an image bearing member using at least three application voltage values which are larger than a discharge start voltage value and which have different magnitudes, at least one of the application voltage values having a value at which a direction of a current corresponding to the one of the application voltage values is reverse to those of currents corresponding to the other application voltage values. A relation between the application voltage value and the detection current value in a discharge area is calculated based on at least three application voltage values Vd1, Vd2, Vd3 and at least three detection current values Id1, Id2, Id3 detected by a current detection portion in relation to at least three application voltage values Vd1, Vd2, Vd3 and a voltage value V0 at which the detection current value is zero is calculated based on the relation in the discharge area.

Abstract translation: 使用至少三个施加电压值将电压施加到图像承载部件，所述至少三个施加电压值大于放电开始电压值，并且具有不同的幅度，至少一个施加电压值具有与其相对应的电流的方向的值 施加电压值中的一个与对应于其它施加电压值的电流相反。 基于至少三个施加电压值Vd1，Vd2，Vd3和由电流检测部分检测到的至少三个检测电流值Id1，Id2，Id3来计算放电区域中的施加电压值和检测电流值之间的关系 基于放电区域的关系，计算与至少三个施加电压值Vd1，Vd2，Vd3以及检测电流值为零的电压值V0的关系。